论文部分内容阅读
可重构光分插复用器(ROADM)和多维光交叉连接(OXC)作为实现下一代动态全光网络的关键设备受到了光通信领域研究机构和产业界的高度重视。1×N端口波长选择开关(WSS)是目前及下一代ROADM的核心器件。针对现有WSS存在的光学系统复杂、系统插损与端口串扰大,以及端口数和通道数有限等不足,提出一种具有通带调谐灵活性的基于硅基液晶处理芯片(LCo S)的1×32高端口数WSS。通过软件远程控制LCo S上加载的全息相位图像,使光通信C波段密集波分复用(DWDM)信号中任意一个或一组波长灵活切换至任意输出端口输出,各波长通道切换独立可控。研究结果表明:系统插入损耗为5 d B~25 d B;栅格为100 GHz时波长信道的3 d B带宽均为40 GHz;带宽从50 GHz起连续可调,调谐步长1 GHz。这一研究为M×N高端口数WSS的研制奠定了坚实的理论实验基础。
Reconfigurable Optical Add-Drop Multiplexer (ROADM) and Multi-Dimensional Optical Cross-Connect (OXC) are key devices in the next generation of dynamic all-optical networks and are highly regarded by research institutes and industry in optical communications. The 1 × N-port wavelength selective switch (WSS) is the core of today’s and next-generation ROADMs. Aiming at the problems of the existing WSS, such as complicated optical system, large system insertion loss and large port crosstalk, and limited number of ports and channels, a novel LCoS-based LCoS chip with passband tuning flexibility × 32 high port number WSS. Remote control of the holographic phase image loaded on the LCo S by software enables any one or a group of wavelengths in the C-band Dense Wavelength Division Multiplexed (DWDM) optical communication to be flexibly switched to any output port for output, and the wavelength channels can be switched independently. The results show that the insertion loss of the system is 5 d B ~ 25 d B and the 3 d B bandwidth of the wavelength channel is 40 GHz when the grid is 100 GHz. The bandwidth is continuously adjustable from 50 GHz and the tuning step is 1 GHz. This research has laid a solid theoretical experimental foundation for the development of M × N high-port number WSS.